Cyber Resilience

CVE-2021-38406

Memory Safety in Deltaww Dopsoft 2.00 – 2.00.07

CISA KEVActive ExploitationEUVD ExploitedMemory Safety
Published
17 September 2021
Modified
30 October 2025
KEV Added
25 August 2022
CVSS Score v3.1 7.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS Score 0.78 99.5th percentile
Risk Priority 83 floored blend · peak EPSS

Summary

CVE-2021-38406 is a high-severity Out-of-bounds Write (CWE-787) vulnerability in Deltaww Dopsoft. Its CVSS base score is 7.8 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked in the top 0.5% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

Delta Electronic DOPSoft 2 versions 2.00.07 and prior contain a vulnerability in which the software lacks proper validation of user-supplied data when parsing specific project files. This produces multiple out-of-bounds write instances tracked under CWE-787.

An unauthenticated local attacker can supply a crafted project file that, once opened by a user, allows arbitrary code execution in the context of the current process. The attack vector requires user interaction but no privileges and yields high impact to confidentiality, integrity, and availability.

CISA has issued ICS advisory icsa-21-252-02 on the issue and lists the vulnerability in its known exploited vulnerabilities catalog.

EU & UK References

Vulnerability Data

Delta Electronic DOPSoft 2 (Version 2.00.07 and prior) lacks proper validation of user-supplied data when parsing specific project files. This could result in multiple out-of-bounds write instances. An attacker could leverage this vulnerability to execute code in the context of…

more

the current process.

CWE(s)
CWE-787
KEV Date Added
25 August 2022

Related Threats

MITRE ATT&CK Enterprise Techniques

T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1203 Exploitation for Client Execution Execution
Adversaries may exploit software vulnerabilities in client applications to execute code.
attack.mitre.org →
T1210 Exploitation of Remote Services Lateral Movement
Adversaries may exploit remote services to gain unauthorized access to internal systems once inside of a network.
attack.mitre.org →
T1211 Exploitation for Stealth Stealth
Adversaries may exploit vulnerabilities to evade detection by hiding activity, suppressing logging, or operating within trusted or unmonitored components.
attack.mitre.org →
T1212 Exploitation for Credential Access Credential Access
Adversaries may exploit software vulnerabilities in an attempt to collect credentials.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-0124Same product: Deltaww Dopsoft
CVE-2023-5944Same product: Deltaww Dopsoft
CVE-2023-0123Same product: Deltaww Dopsoft
CVE-2023-4685Same product: Deltaww Dopsoft
CVE-2025-47725Same vendor: Deltaww
CVE-2025-47728Same vendor: Deltaww
CVE-2025-47726Same vendor: Deltaww
CVE-2023-5068Same vendor: Deltaww
CVE-2025-22884Same vendor: Deltaww
CVE-2024-47963Same vendor: Deltaww

Affected Assets

deltaww
dopsoft
2.00 — 2.00.07

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SI-16 Memory Protection
addresses: CWE-787

Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure-development practices (static analysis, bounds checking, code review) are the primary means of preventing out-of-bounds writes.

ID.RA-01 partial match
prevents

Vulnerability scanning and recording can discover out-of-bounds write flaws so they can be remediated.

PR.PS-02 partial match
prevents

Patching or replacing vulnerable software directly eliminates known instances of this coding weakness.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing in development and acceptance can detect and prevent out-of-bounds write defects.

A.8.25 Secure development life cycle partial match
prevents

Secure development life cycle mandates practices that prevent out-of-bounds writes.

A.8.26 Application security requirements partial match
prevents

Application security requirements can specify bounds-checking and safe memory handling.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture and engineering principles reduce the likelihood of buffer overflows.

A.8.28 Secure coding partial match
prevents

Secure coding directly addresses out-of-bounds writes through language choice and coding standards.

A.8.32 Change management partial match
prevents

Change management can enforce review gates that catch unsafe memory operations before deployment.

References